ooffield



(No Model.) 2 sheetssheen 1.

P. T. COFPIELD.

WINDMILL.

No. 310,385. Patented Jan. 6, 1885.

N PETERS. Plam-mhngmpher. washmgmn, uc

2 Sheetgf-*S-heet 2.

(No Model.)

P. T. GOFFIBLD.

WINDMILI., Y No. 810,385. Patented Jan. 6. 1885..

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UETTTEn STnTEs PATENT OEETCEo PETER T. COFFIELD, OF .NEWv CARLISLE,OHIO, ASSGNOR TO HIMSELF, CHARLES H. NEFF, AND ALB ult" L. VOOLFiY, OFSAME PLACE.

WlNDEVllLL.

TLDECIFCATION farming partei' Letters Patent No. 310,385, dated January5, 1885.

Application tiled March 212, 1584.

To (LZ/ wlw/nj t www] concern Be it known tirati, PETER T. CoEEInLD, acitizen ofthe United States, residing at New Carlisle, in the county ofClark and'State of Ohio, have invented new and useful Improvements inTWindmills, of which thefollowing is a specification.

This invention relates to improvements in that class of attachments forwindmills or en` gines in which automatic devices are employed forlocking and unlocking a geared windmill to the derrick. It is well knownthat when a windmill is geared for the purpose of running a shaft towhich machinery is attached and resistance is applied tothe shaftrunning vertically through the mill there is a tendency to walk awayfrom the work, and also move out of theline of the wind, thereby losingpower and placing the wind-wheel in such a position that the wind cannotdrive it.

The object, therefore, of my invention is to provide means by which thewind-wheel is prevented from being thrown out of the winds eye, butconstantly kept to its work, and thus to impart a regular movement tothe gearing for transmitting the motion to the machinery or other objectto be driven, and to do thisin a very simple and reliable manner, sothat the mill will perform its work without sudden shocks, by which themachinery is easily disarranged, and also that the full power may beexerted, no matter how much the wind changes. This I accomplish in themanner and by the mechanism hereinafter described and claimed, referencebeing made to the accompanying drawings,illustrating my i nvention,inwhich- Figure l represents a plan or top view of my improvement inposition and properly geared for operating the machinery. Fig. 2 is aside elevation of the same. Fig. 3 is a side elevation taken at rightangles to Fig. 2. Fig. 4L is an enlarged sectional view of the box forthe push-bar or spindle,containing a spring to prevent shocks or suddenjars to the operating mechanism; Fig. 5, an end view ofthe same. Fig. 6is a detail view of the clutch or brake lever. Fig. 7 is a detailsectional'view of the brakelever when forced against the bed or derrickplate by means ofthe spring presserfoot, on an enlarged scale.

(No model ,l

Like letters of reference indicate like parts in all the figures.

In the said drawings, A indicates the top or upper end of the mast orderrick, to which the circular bed-plate B is secured. The main verticalshaft C passes through this plate, and has a sleeve, c, upon `which thevane-bar D freely revolves through the medium of an arm, a, secured tothe vane-bar and journaled on the sleeve ,0.

To the upper end ofthe shaft C a bracketed plate, E, is secured by asetserew or otherwise, and having at one side a bearing, c, for thedriving-shaft c', which is journaled at its opposite end in an arm, c?,that is extended up ward, and has attached Vto it a guy rod orbrace, f,connected to the vane-bar, to assist in supporting it. A pinion, b, onthe shaft c meshes with a gearwheel, d, secured tothe shaft C, andimparts motion tothe machinery, pumps, &c., when acted on by thewind-wheel.

At one side ofthe bracketed plate E is secured a bent or curved armorlever, g, which bears against a push-bar, h, arranged in a box, h.This box is provided with trunnions and is journaled in the standards'or brackets i, secured to the vanesbar, so that said box can freelyoscillate. The push-bar h is reduced at one end, and has a coiledspring, r, around it, which bears against a shoulder in said box 71,',the object of the spring being to prevent any sudden shock or jarring tothe gearing and machinery when the arm y comes in contact with thepush-bar 7L. To the opposite end of this push-bar is pivoted the leverF, having at its upper end a slot fitting over the reduced end of saidpuslrbar, and al lowing the lever to oscillate freely on it as it moves.The lever F is provided with an open slot,f, having sharp edges, whichform clam-p` ing or gripping jaws when the lever is tilted, one side ofsaid jaws engaging with the upper end and the other side with the lowersurface ofthe circular bed-plate B. The lower end of the lever F isextended, and when the vanebar moves in that direction it comes incontact with an arm or bent lever, k, secured to the lower side of thevane-bar, and releases the lever F from its'gripping action on thebed-plate.

At the rear side ofthe leverF is secured a ICO spring presser-foot, Z,which bears ou the upper surface of the bed-plate B, and always holdsthe lever in contact lwith said plate and in position, and.. preventsthe possibility ofV said lever slipping, thus forming an automaticclutch or brake lev r. The vane will locate itself in line with thewind7 and the bracketed plate is brought to a stop by coming in contact-with the spring push-bar, which, pressing against the spring within thepivoted box, obviates any shock, and, passing through said box7 itfastcns the clutch on the surfaces ofthe bed-plate.

Having thus described niy invention, what l claim is l. In awin d niill,aspring push-bar provided with a pivotal clutch-lever for engaging` witha circular base-plate, and acted on by an arm or lever attached to thevane-bar of the mill, substantially as described.

2. In a windmill, a pivoted clutclrlevcr provided with springpresser-foot engaging` with both sides of a circular bed-plate, andoperated by a spring push-bar and an arin attached to the vane-bar,substantially as described.

3. ln a windmill, the combination, with a circular bedplate, ofaspringpish-bar inounted in a pivoted box secured to the vane-bar, and attachedat one end toa clutch-lever, and acted against at the opposite end by anarni connected to the bracketed plate lil, substantially as described.

et. ln awindinill, a clutch-lever havingjaws to engage with the upperand lower surface of a circular bed-plate at ached to the upper end ofthe dei-rick, and operated by a spring pushv` bar, against which an arinon the vane-bar bears, and a spring presser-foot, sul'istantially asdescribed.

o. rlhe combination, with a circular bedplate, of a spring push-barinountcd in a pivotedrbox, and connected to a clutch-lever at one end,and acted against by an arni connected to the wheel-frame, with an arnisecured to the lower side of the vane-bar, for the purpose of unlockingthe clutch-lever, substantially as described.

G. The combination, with a circular bedplate, of a spring push-barmounted in a pivoted box journaled in standards on the vanebar, andconnected at one end to a pivoted clutch-lever provided with a springpresserfoot, and having chiniping-jaws, with an arm secured to the lowerside of the vane-bar, and an arin connected to the supportingfrarne, allarranged for operation substantially as described.

7. 'ihe conil'iination, with a circular bedH plate, of a spring puslrbarmounted in a bob; having truunions journaled in standards on thevane-bar, and connected at one end to a pivoted clutch-lever, with anarm attached to a bracketed plate secured to the bearing of the verticalshaft, and carrying the gearing and windwheel shaft, substantially asdescribed.

The coinbination, with a circular bedplate, of a sprint` push-bar, apivotcd clutch lever secured thereto, and carrying a springpresser-foot, with an arin attached to a bracketed plate secured to thebearing ofthe vertical shaft, and carrying the gearing and thewind-,wheel shaft, all arranged substantially as described. Q

lu testimony whereof I have hereunto set niy hand in the presence ot'two subscribing witnesses.

FETES T. COFFIELD. `lWitnesses:

ALBERT L. VfooLLaY, Crus. Il. irxso.

